:root {
  color-scheme: light;
  --navy: #15324b;
  --teal: #167d8d;
  --mist: #edf6f6;
  --ink: #22313f;
  --muted: #647482;
  --line: #d7e2e7;
  --paper: #ffffff;
}
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: #f5f8f9; font: 16px/1.65 system-ui, -apple-system, "Segoe UI", sans-serif; }
header { background: var(--navy); color: white; }
.nav { max-width: 920px; margin: auto; padding: 18px 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: white; text-decoration: none; font-weight: 750; letter-spacing: .01em; }
nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: #d8edf1; text-decoration: none; font-size: 14px; }
main { max-width: 920px; margin: 0 auto; padding: 64px 24px 80px; }
.eyebrow { color: var(--teal); font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 8px 0 16px; max-width: 760px; color: var(--navy); font-size: clamp(34px, 6vw, 58px); line-height: 1.08; letter-spacing: -.035em; }
h2 { margin: 36px 0 8px; color: var(--navy); font-size: 23px; }
p, li { max-width: 760px; }
.lead { color: var(--muted); font-size: 20px; max-width: 720px; }
.panel { margin-top: 34px; padding: 28px; border: 1px solid var(--line); border-radius: 16px; background: var(--paper); box-shadow: 0 12px 36px rgba(21,50,75,.07); }
.button { display: inline-block; margin-top: 16px; padding: 11px 18px; border-radius: 9px; background: var(--teal); color: white; text-decoration: none; font-weight: 700; }
.notice { padding: 16px 18px; border-left: 4px solid var(--teal); background: var(--mist); }
footer { border-top: 1px solid var(--line); background: white; }
.footer { max-width: 920px; margin: auto; padding: 24px; color: var(--muted); font-size: 14px; }
.footer a { color: var(--teal); }
code { padding: 2px 5px; border-radius: 5px; background: var(--mist); }
@media (max-width: 620px) { .nav { align-items: flex-start; flex-direction: column; } main { padding-top: 44px; } }